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23-09-2016
Mathematics

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When the tax on cigarettes was increased by 5%, the price of a certain pack became $5.60. What was the original price?

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Аноним Аноним

23-09-2016

x=the original price.
Then:
x+5% of x=$5.60
5%=5/100

We can suggest this equation:
x+(5/100)x=5.60
lower common multiñle=100
100x+5x=560
105x=560
x=560/105
x≈5.33

Answer: the original price was $5.33.

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